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经营范围
发明名称
Combined flash light and reading glass
摘要
申请公布号
US1884968(A)
申请公布日期
1932.10.25
申请号
US19310508159
申请日期
1931.01.12
申请人
BLOCH ISABELLE H M
发明人
BLOCH ISABELLE H. M.
分类号
G02B25/02
主分类号
G02B25/02
代理机构
代理人
主权项
地址
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